Jaguar Sovereign MOT pass rate & common failures
The Jaguar Sovereign appears in 2,259 MOT tests spanning model years 1983–2021, and 80.2% of them passed. All cars of a similar age fail 23.9% of the time, so this is 4.1pp better than the group it competes with. Its most common failure areas are lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (9.0%) and suspension (8.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, component mounting prescribed areas and washers — catalyst emissions alone was recorded 103 times.
Mileage is the strongest signal on the record: 14.1% of 0-30k cars fail, rising to 28.2% once past 150k — 2.0× the risk.
Suspension is the most common advisory, noted on 32.6% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 22.3% in 2021 to 16.1% in 2025, as the worst-kept examples leave the fleet.
How it compares
By model year
Every Sovereign model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 1984 | 83 | 86.8% | 13.3% | Lighting & signalling |
| 1985 | 178 | 87.1% | 12.9% | Lighting & signalling |
| 1986 | 160 | 81.9% | 18.1% | Lighting & signalling |
| 1988 | 81 | 77.8% | 22.2% | Lighting & signalling |
| 1989 | 55 | 83.6% | 16.4% | Brakes |
| 1990 | 50 | 78.0% | 22.0% | Brakes |
| 1991 | 34 | 76.5% | 23.5% | Visibility |
| 1992 | 49 | 89.8% | 10.2% | Lighting & signalling |
| 1993 | 37 | 83.8% | 16.2% | Lighting & signalling |
| 1994 | 57 | 87.7% | 12.3% | Emissions & environmental |
| 1995 | 133 | 83.5% | 16.5% | Lighting & signalling |
| 1996 | 155 | 74.8% | 25.2% | Suspension |
| 1997 | 114 | 76.3% | 23.7% | Lighting & signalling |
| 1998 | 210 | 78.1% | 21.9% | Suspension |
| 1999 | 224 | 78.6% | 21.4% | Lighting & signalling |
| 2000 | 186 | 78.5% | 21.5% | Suspension |
| 2001 | 157 | 79.0% | 21.0% | Suspension |
| 2002 | 70 | 70.0% | 30.0% | Lighting & signalling |
| 2007 | 49 | 81.6% | 18.4% | Body, structure & corrosion |
| 2008 | 50 | 84.0% | 16.0% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 9.0% | 204 |
| 2 | Suspension | 8.1% | 183 |
| 3 | Brakes | 7.3% | 164 |
| 4 | Visibility | 5.1% | 115 |
| 5 | Body, structure & corrosion | 4.4% | 100 |
| 6 | Emissions & environmental | 4.3% | 97 |
| 7 | Tyres | 2.5% | 56 |
| 8 | Steering | 1.7% | 39 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 103 |
| 2 | Component mounting prescribed areas | 102 |
| 3 | Washers | 85 |
| 4 | Headlamp aim | 85 |
| 5 | Chassis condition | 66 |
| 6 | Rbt (sp) | 64 |
| 7 | Integral vehicle structure condition | 60 |
| 8 | Headlamp | 57 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 32.6% | 737 |
| 2 | Brakes | 17.8% | 403 |
| 3 | Tyres | 16.6% | 376 |
| 4 | Emissions & environmental | 12.3% | 278 |
| 5 | Body, structure & corrosion | 11.7% | 265 |
| 6 | Other defects | 7.4% | 168 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 156 | 14.1% |
| 30-60k | 403 | 13.4% |
| 60-90k | 601 | 18.5% |
| 90-120k | 592 | 22.8% |
| 120-150k | 373 | 23.6% |
| 150k+ | 131 | 28.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 524 | 22.3% |
| 2022 | 510 | 20.4% |
| 2023 | 456 | 18.9% |
| 2024 | 408 | 20.1% |
| 2025 | 361 | 16.1% |
What to check before buying a Jaguar Sovereign
- Lighting & signalling (9.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (8.1% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Brakes (7.3% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Jaguar Sovereign?
80.2% of the 2,259 Jaguar Sovereign MOT tests in this dataset passed, a 19.8% fail rate, across model years 1983–2021.
What does the Jaguar Sovereign most often fail its MOT on?
Lighting & signalling, recorded in 9.0% of tests, then suspension (8.1%).
How much does mileage affect Sovereign MOT results?
Fail rates run at 14.1% for cars in the 0-30k band and 28.2% for 150k+, a 14.1-point difference.
Methodology & source. Based on 2,259 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.